CKEditor - configure so fonts used on website appear within editing window?

Hi, could I check in how I might go about configuring the css which CKEditor in Kentico 8.2 uses so that it utilises the correct fonts within the WYSIWYG interface which appears when opening a "Static html webpart" for instance?

The only answers I can see online relate back to 2009 era of CKEditor.

Recent Answers

Many thanks Brenden, would I need to restart the Kentico app pool to see the results of the update to configuration? I only ask as I checked an article but the update doesnt seem to have taken. I only ask as well as restarting the app pool slows Kentico down to a glacial crawl everytime.